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shutvik [7]
3 years ago
5

Ermining the Measure of an Interior Angle

Mathematics
2 answers:
CaHeK987 [17]3 years ago
8 0
I think it’s 70 degrees
shepuryov [24]3 years ago
4 0

Answer:

ITS 52

Step-by-step explanation:

BECAUSE on the triangle if you add angles 58 and 70 you get 128 and do 180-128 and you get 52 (i also just did assignment and got it right)

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Perform the operation below using a number line. -7-(-8). ASAP. pleeease help.​
Aliun [14]

Answer:

1

Step-by-step explanation:

Calculation steps:

-7-(-8) =                  ⇒ two negatives cancel and change to positive

- 7 + 8 =                  ⇒ 8-7 = 1

1                              ⇒ answer

4 0
4 years ago
1.44 Make-up exam: In a class of 28 students, 27 of them took an exam in class and 1 student took a make-up exam the following d
Olenka [21]

Answer:

a) Decrease

b) New mean = 78.43

c) Decrease                        

Step-by-step explanation:

We are given the following in the question:

Total number of students in class = 28

Average of 27 students = 79

Standard Deviation of 27 students = 6.5

New student's score = 63

a) The new student's score will decrease the average.

b) New mean

Mean = \displaystyle\frac{\text{Sum of all observations}}{\text{Total number of observation}}

Mean = \dfrac{\displaystyle\sum x_i}{27} = 79\\\\\sum x_i = 27\times 79 = 2133

New mean =

\text{ New mean} =\dfrac{ \displaystyle\sum x_i +63}{28}\\\\ =\dfrac{2133+63}{28}= \dfrac{2196}{28} = 78.43

Thus, the new mean is 78.43

c) Since the new mean decreases, standard deviation for new scores will decrease.

This is because the new value is within the usual values i.e. within two standard deviations of the mean. So, this wont cause a lot of variation as this value will be closer to already available data values. Also number of observations (n) in the denominator is increasing. Based on both these points we can conclude that standard deviation will decrease

Formula for Standard Deviation:

\text{Standard Deviation} = \sqrt{\displaystyle\frac{\sum (x_i -\bar{x})^2}{n}}  

where x_i are data points, \bar{x} is the mean and n is the number of observations.

7 0
3 years ago
Which of the following best defines a function?
Sidana [21]
Answer: <span>A. A function is a special type of relation for which there is a rule that pairs each input with exactly one output.

Option B is incorrect because it does not include that there cannot be two x-values with the same y-value. Option C is incorrect because it is a relation, not just a set of ordered pairs. Option D is incorrect because there <em>is</em> a particular pattern in a function.

Hope this helps!</span>
8 0
3 years ago
Find f( 3y ) if f(x) = - 2x + 3. SHOW YOUR WORK
guajiro [1.7K]
Can I get brainleist of correct
4 0
3 years ago
Geometry...Please help as soon as possible please and Thank you!!!
Triss [41]

Answer:

Step-by-step explanation:

Statment1. BD bisects ∠ABC

Reason1. Given

Statment 2. ∠ABD≅∠DBC (A)

Reason2. Definition of angle bisector

Statment 3. BD≅BD (S)

Reason3. Reflexive propriety

Statement 4. ∠BDA≅∠BDC (A)

Reason 4. Given

Statement 5 ΔABD≅ΔCDB

Reason 5. ASA theorem of congruency

8 0
3 years ago
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